Shackle



FIG. 1 is a side view of the shackle showing my new design, the side opposite being a mirror image;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left end view thereof;

FIG. 5 is a right end view thereof;

FIG. 6 is a side view of the second embodiment of the design of FIG. 1, the side opposite being a mirror image thereof;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a bottom view of FIG. 6;

FIG. 9 is a left end view of FIG. 6;

FIG. 10 is a right end view of FIG. 6;

FIG. 11 is a side view of a second embodiment of the design of FIG. 1;

FIG. 12 is a top view of FIG. 11;

FIG. 13 is a bottom view of FIG. 11;

FIG. 14 is a left end view of FIG. 11;

FIG. 15 is a right end view of FIG. 11. 

The ornamental design for a shackle, as shown and described. 